Presbyterianism in Summerside 1853—2003 Rev. William Verwolf RSV. Charles Camegy 1937-1942 1943-1949 the twenty year period ending Dec. 31, 1945. The first half of the Twentieth Century had been a difficult period for Summerside Presbyterian Church. From 1901 to 1949 membership size had dropped from 315 to 240 communicants — a 24% decline! Despite the setback the church had survived. The next fifty years would witness new growth and prosperity. REV. J. DONALD MACKAY: MINISTER OF VISION 1950-1964 ev. J. Donald Mackay, a relative of the first resi— dent minister of Summerside Presbyterian Charge, Rev. Dr. Neil MacKay, succeeded Rev. 37